2.4. Fate and Transport of Contaminants

Try these first

1. 1.

   What is a DNAPL?

   Hint

   Think of something that is heavy and goes below water.

2. 2.

   How do LNAPLs behave in water?

   Hint

   Remember, L for Light means it stays on the top.

3. 3.

   What happens to DNAPLs when they enter a water system?

   • They float on top.
   • They mix with the water.
   • They sink to the bottom.

   Hint

   Recall the density concept.

4. 4.

   True or False: LNAPLs are less dense than water.

   • True
   • False

   Hint

   Think of oil on water.

5. 5.

   If a chemical company spilled a DNAPL at a site, and contamination reached a nearby river decades later, analyze the potential liability issues.

   Hint

   Consider who might be responsible for cleanups and the environmental regulations.

6. 6.

   Construct a model that predicts contaminant flow from sediment into a water body over time, incorporating factors like dissolution rates and water flow.

   Hint

   Think about what affects the rate of dissolution and how that interacts with water movement.